JPS5816806Y2 - chain chisel machine - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a chain chisel.

Conventionally, chain chisels usually include a base that has a vice mechanism for the workpiece, a device that moves and adjusts the base in the width direction of the workpiece, and a A cutting device having a chain blade for cutting a workpiece was fixedly attached to a main body that was movable up and down.

Therefore, when cutting a groove of a desired length along the length of a workpiece, the base must be moved along the length of the workpiece, and the entire chain chisel must be lifted up. In order to reduce the heavy work of moving, a device for moving and adjusting the base in the longitudinal direction of the workpiece is required, which tends to complicate the structure and make its operation difficult.

In view of the above-mentioned reasons, the purpose of the present invention is to have a simple structure and easy operation, which enables groove processing of a desired length without moving the base in the longitudinal direction of the workpiece. It is to provide chain only machine.

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a base placed on the upper surface of the workpiece W, and a connecting piece 3 is straddled over the upper ends of both left and right branches 2, 2 erected at both ends of the upper surface. Together with both pillars 2, 2
In between, a main body 30 equipped with a cutting device to be described later is provided so as to be movable up and down.

A main guide rod 4 and a sub-guide rod 5 are slidably supported horizontally on both ends of the base 1 in parallel with the width direction of the workpiece W, and the front ends of both guide rods 4 and 5 ( A first vice 6, which will be described next, is attached to the right end in FIG. 9, while a second vice 9 is attached to the side opposite to the first vice 6.

This second vise 9 is the tip of an adjustment screw 11 with a knob that is screwed through a support member 10 that is slidably attached to the rear end (left end in FIG. 9) of the main guide rod 4. It is attached to the first vise 6 and is biased toward the first vise 6 via a spring 12.

13 is a spring for preventing loosening of the adjusting screw 11;
Reference numeral 4 denotes a fixing member in the form of a set screw that fixes the support member 10 at an arbitrary sliding position with respect to the main guide 4;
As shown in the figure, it is screwed into a part of the support member 10, and the screw end face faces and engages with the flat part 4A of the main guide rod 4.

On the other hand, the first vise 6 has a bulge 6B fixed to the sub guide rod 5 and a main guide rod 4 at both left and right ends of its upper surface.
A block 6A having a fitting hole that is slidably fitted into the block 6A.
This block 6A has a sliding groove 7 that communicates with the fitting hole and opens for a predetermined length on the left side surface in the figure.
is formed with a notch.

A pin 8 protruding from the front end of the main guide rod 4 is slidably fitted into the sliding groove 7, and a clamp lever 16 is connected to the tip of the pin 8.

The pin 8 is fixed to the main guide rod 4 via a connecting pin 15, as shown in FIG.

The clamp lever 16 is used to perform a clamping operation by moving the second vise 9 by a predetermined amount with respect to the first vise.
It is tiltable on the left side of the block 6A around the pin 8, and is supported by an engagement pin 1.8 which is passed through the block 6A, and is movably engaged with the engagement pin 18 at its base. A dogleg-shaped engagement hole 17 is formed.

This engagement hole 17 connects the clamp lever 16 to P1 in FIG.
A sliding surface 17A that presses against the engagement pin 18 to move the main guide rod 4 in the direction of arrow P2 in the figure when tilted in the direction of the arrow, and a sliding surface 17A that is maintained when the clamp lever 16 is tilted to the position shown by the chain line in the figure. It has a locking surface 17B that engages with the dowel pin 18 to lock and hold the clamp lever 16 at that position H.

Reference numeral 19 denotes a spring tensioned between the clamp lever 16 and the first vise 6, which prevents the clamp lever 16 from inadvertently tilting in the direction of the arrow P1 in the figure, and maintains the opposing distance between the two vices 6°9. is held in place.

Next, the feed device for adjusting the movement of the base 1 in the width direction of the workpiece W will be explained according to FIGS. 1, 9 and 10. 1 is a screw shaft supported between a block 6A of the vice 6 and a swelling portion 1A protruding from the upper surface of the base 1,
The front half (the right hand side in FIG. 9) has a shaft portion 20A rotatably and slidably fitted to the block 6A, and a handle 21 is attached to the front end of the shaft portion 20A.

Further, the rear half (left half in FIG. 9) of the screw shaft 20 has a threaded portion 20B screwed into the bulge 1A of the base 1.

Reference numeral 22 denotes a U-shaped regulating plate for setting the desired amount of movement of the base 1, and the diffraction pieces 22A and 22B on the front and rear (left and right in FIG. The shaft portion 20 of the screw shaft 20 faces each other at a predetermined interval.
It is fitted integrally with A.

The inner surface of the front bending piece 22A faces the end surface of the adjustment plate 25 which is fastened to the upper surface of the block 6A through the screw 23 and the elongated hole 24 so as to be movable back and forth. As shown in the figure, the amount of movement S2 of the base 1 is set by the facing interval S1.

Reference numeral 27 denotes an adjustment lever for feed operation, which is supported on the right (top in FIG. 10) side of the regulating plate 22 so as to be tiltable about a pin 26. Engagement hole 2 that movably engages with matching pin 18
8 is formed.

This engagement hole 28 has a locking surface 2 that engages with the locking pin 18 when the adjustment lever 27 is in the position shown by the solid line in FIG.
8B, and a sliding surface 28A that slides in pressure contact with the engagement pin 18 and sequentially moves the base 1 in the direction of the arrow Q2 in the figure via the screw shaft 20 when the operating lever 27 is tilted in the direction of the arrow Q1 in the figure.
and has.

Reference numeral 29 denotes a spring interposed between the block 6A and the regulating plate 22, which always biases the regulating plate 25 rearward (leftward in FIG. 9), and by rotating the screw shaft 20. base 1
When the adjustment lever 27 is moved in the width direction of the workpiece W, the frictional reaction force generated between the base 1 and the workpiece W causes an adjustment lever (the adjustment lever 27 located at the chain line position in FIG. 9 in the opposite direction of the Q1 arrow in the figure). prevents accidental tilting.

Next, the cutting device that performs groove machining etc. on the workpiece W will be explained according to FIGS. The attached main body is formed into a cylindrical shape as shown in FIG. 6, and has sliding holes 31A at both left and right ends that slidably fit into the pillars 2, 2.

31 A force is normally installed.

As shown in FIG. 5, in the inner hole 31 of the 30 m section of the main body, there is a motor housing 33 that houses a motor 32 for driving the chain blade 35, and a driving shaft of the motor 32 and a drive shaft of the chain blade 35 are connected. A gear housing 34, which has a built-in speed reduction mechanism (not shown) and is fastened to the front surface of the motor housing 33, is rotatably fitted therein.

The front surface of the gear housing 34 is substantially flush with the front surface of the main body 30, and a swing board 36 that supports a mounting plate (not shown) for a chain blade 35 is fastened to the front surface of the gear housing 34. .

A cover 41 that covers a part of the chain blade 35 and has a discharge port 41A for discharging chips lifted up by the chain blade 35 is removably attached to the front surface of the swing board 36. .

As shown in FIG. 2, the swing board 36 has a spring 42 stretched between a bulge 30A protruding from the lower part of the main body 30 and a part of the grip part 46 on the right side of the motor housing 33. is always energized clockwise in the figure,
Rotation of the swing board 36 in the counterclockwise direction is prevented.

The upper part of the swing board 36 has a substantially triangular shape as shown in the figure, and the lower right side thereof has a set screw 43 screwed into the bulge 30B protruding from the lower right part of the front surface of the main body 30. A locking surface 37 is formed so as to be able to come into contact with the upper end surface, and this locking surface 37 comes into contact with the upper screw 43 when the chain blade 35 is in a hanging shape as shown in FIG. This prevents clockwise rotation.

Furthermore, a regulating member 39 for adjusting the swinging angle of the board 36 to a desired swinging angle is attached to the left end of the swinging board 36 so as to be rotatable around a pivot bolt 38, as shown in FIG. It is being

This regulating member 39 is always biased clockwise in the figure via a spring 40, and its lower side is connected to an adjustment bolt screwed into a bulge 30C protruding from the upper left part of the main body 30 in the figure. 44 and is pressed against the tip 44A of 44.

The two side surfaces of this regulating member 39 have flat surfaces 39A.
and a locking recess 39B are formed continuously, and the flat surface 39A comes into pressure contact with the tip 44A of the adjustment bolt 44 when the chain blade 35 hangs down as shown in FIG. As shown in FIG.
5 is tilted at a predetermined angle, the tip 44A of the adjustment bolt 44
The chain blade 35 engages with the chain blade 35, causing the chain blade 35 itself to rotate inadvertently in the clockwise direction, or to be cyclically driven in the counterclockwise direction in the figure.
This prevents clockwise rotation of the oscillating base plate 36 caused by cutting resistance.

Furthermore, a lever piece 39C for disengaging the engagement between the locking recess 39B and the adjustment bolt 44 is integrally formed on the regulating member 39.

Further, the tip end 44A of the adjustment bolt 44 is formed into a hemispherical shape corresponding to the locking recess 39B, and the swing angle of the swing board 36 is adjusted depending on the tightening of the adjustment bolt 44. Adjusted arbitrarily.

45 is a spring for preventing the adjustment bolt 44 from loosening.

Reference numerals 46 and 46 denote left and right grips provided on the upper part of the motor housing 33, which are used to move the cutting device up and down along the pillars 2, 2 together with the main body 30, and to move the oscillating board 36 and other parts relative to the main body 1. This is for swinging the cutting device.

47 is a locking member for holding the main body 30 on the upper part of the pillars 2, 2, 48 is a stopper rod that sets the descending range of the main body 30, and a set screw is attached to the bulge 30D protruding from the left side of the main body 30. 49 so that it can move up and down.

Subsequently, the operation of this embodiment configured as described above will be explained.

As shown in FIG. 2, in a state where the chain blade 35 is held in a hanging state, first, both vices 6
．． After moving the second vise 9 with respect to the first vise 6 via the fixing member 14 and the adjusting screw 11 so that the opposing distance between the two vise 9 is increased by about 2 to 3 mm, for example, the base 1 is moved to the workpiece. Place it on the top surface of W.

At this time, the force of the spring 19 stretched between the clamp lever 16 and the first vise 6 prevents the clamp lever 16 from inadvertently tilting in the direction of the arrow P1 in FIG. The base 1 can be satisfactorily placed on the upper surface of the workpiece W by maintaining a predetermined opposing distance of .9.

Thereafter, when the clamp lever 16 is tilted in the direction of the arrow P1 in FIG. When tilted to the position shown by the chain line, both vises 6.9 firmly clamp both sides of the workpiece W as shown in FIG.

Thereafter, if the width of the groove to be machined is larger than the width Ll of the chain blade 35 (shown in FIGS. 1 and 5), the adjustment plate 25 is moved according to the difference.

Incidentally, if the difference is 9 mm, the facing interval S1 between the adjusting plate 25 and the bent piece 22A of the regulating plate 22 is set to 9 mm when the adjusting lever 27 is in the position shown by the solid line as shown in FIG. do.

After setting as described above, the main body 3
0 and performs the first groove machining.

At this time, due to the force of the spring 42 stretched between the main body 30 and the motor housing 33, the chain blade 35
While preventing counterclockwise rotation of the oscillating plate 36, the pressure engagement between the locking surface 37 of the oscillating plate 36 and the distal end surface of the set screw 43 allows
This prevents the chain blade 35 from rotating inadvertently in the clockwise direction or from the clockwise rotation of the chain blade 35 caused by the cutting resistance of the chain blade 35 that is circulated in the counterclockwise direction in FIG. The blade 35 is held in a hanging shape.

After finishing the first groove machining, when the adjustment lever 27 is tilted in the direction of arrow Q1 in FIG.
By tilting the adjustment lever 27 until the adjustment lever 2A hits the end surface of the adjustment plate 25, the base 1 is moved in accordance with the width of the groove to be machined.

Thereafter, the main body 1 is lowered again along the pillars 2, 2 to perform the second groove machining.

Next, when machining a groove with a dimension longer than the vertical width L2 of the chain blade 35 (shown in FIGS. 1 to 3), after the above-mentioned groove machining is completed, the motor housing 33, gear When the housing 34 and the swing board 36 are rotated counterclockwise as shown in FIG. The engagement recess 39B of the regulating member 39 engages the tip 44A of the adjustment bolt 44, and the chain blade 35 is tilted at a predetermined angle along the longitudinal direction of the workpiece W. It is maintained in the same state.

After that, adjust the adjustment bolt 4 according to the vertical length of the groove to be machined.
The inclination angle of the chain blade 35 can be adjusted by tightening the chain blade 4 more or less.

Thereafter, the main body 30 is lowered along the struts 2, 2, and a third groove is formed.

At this time, due to the force of the spring 42 stretched between the main body 30 and the motor housing 33, the chain blade 3
5 from counterclockwise rotation of the chain blade 35, while the locking portion 39B of the regulating member 39 and the tip portion 44A of the adjustment bolt 44 prevent the chain blade 35 itself from rotating inadvertently in the clockwise direction. It is possible to hold the chain blade 35 at a predetermined inclination angle by preventing clockwise rotation of the chain blade 35 caused by the cutting resistance of the chain blade 35 which is circularly driven in the counterclockwise direction in FIG.

Therefore, the horizontal width L1 and the vertical width L2 of the chain blade 35
Even when the width and length of the groove to be machined are larger than those of the groove, the groove can be machined easily and accurately with a simple operation.

Note that compared to the lower end surface of the chain blade 35 in the hanging state shown in FIG. 2, the lower end surface of the chain blade 35 tilted at a predetermined angle shown in FIG. 3 will rise due to the inclination. Even when machining a groove with a length approximately twice as long as the longitudinal width L2 of the chain blade 35, the rise of the lower end surface due to the inclination of the chain blade 35 is slight, which interferes with the groove depth in the workpiece W. There is no need to adjust the stopper rod 48 as it is not enough to cause a problem.

That is, in this invention, the guide rod is slidably fitted into the base, and at both ends there are first guide rods for holding the workpiece. A second vice is provided, and a feeding device is provided between the first vice and the base for adjusting the movement of the base along the width direction of the workpiece, and a feed device is provided on the base. A cutting device having a chain blade for cutting the workpiece is attached to a main body that is movable up and down with respect to an erected support so that it can swing along the longitudinal direction of the workpiece, and the main body and the Since this is a chain-only machine with a means interposed between the cutting device and the cutting device to hold the cutting device at a predetermined oscillation angle, the cutting device can be oscillated along the longitudinal direction of the workpiece relative to the main body. By holding the swing angle at a predetermined swing angle, it is possible to easily form a groove of a predetermined length in the longitudinal direction of the workpiece.

Further, by moving the base by a predetermined amount in the width direction of the workpiece using the feed device, it is possible to easily form a groove with a predetermined groove width in the width direction of the workpiece.

Moreover, one end of the guide rod is fitted into the first vise so as to be movable in the axial direction, and a clamp lever that moves the second vise together with the guide rod in the direction of clamping the workpiece is tilted at the one end of the guide rod. The clamp lever is urged in the unclamping direction by a spring and is connected to the first vise by a retaining pin and an engaging hole, and the retaining hole is connected to the first vice by a retaining pin and an engaging hole. A sliding surface that moves the second clamp together with the guide rod to the clamping position of the workpiece when the is tilted in the clamping direction, and a sliding surface that is continuously formed at one end of this sliding surface and that engages with the retaining pin Since the second vise is configured to have a locking surface that holds the second vise in the clamp position together with the clamp lever, in the unclamped state, the second vise can be held in the unclamped position together with the clamp lever by the biasing force of the spring. This has the effect of making it easier to set the chain chisel on the workpiece.

Furthermore, the second vise can be locked and held in the clamping position together with the clamp lever by a simple operation of tilting the clamp lever in the clamping direction and engaging the locking pin with the locking surface of the locking hole. There is.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention. Figure 1 is a perspective view showing the entire chain chisel, Figure 2 is a front view showing the chain blade held in a hanging state, and Figure 3 is the chain blade. Figure 4 is a front view showing the state where the camera is tilted at a prescribed angle.
A sectional view taken along the line V-IV, Fig. 5 is a side sectional view showing the fitted state of the main body and the cutting device, Fig. 6 is an enlarged perspective view of the main body, and Fig. 7 shows the clamp lever and main guide rod. Fig. 8 is a side view showing the connecting part of Fig. 7, Fig. 9 is a sectional view taken along
The figure is a side sectional view showing a feeding device that moves the base in the width direction of the workpiece, and FIG. 10 is a sectional view taken along the line X--X in FIG. 9. 1...base, 2...post, 4...
...Main guide rod, 5...Sub guide rod,
6...First vice, 9...Second vice, 16...Clamp lever-120...
Screw shaft, 22...Regulation plate, 25...Adjustment plate, 27...Adjustment lever, 30...Main body, 31...Inside Hole, 33...Motor housing, 34...Gear housing, 35...
...Chain blade, 36... Swing board, 3
7... Locking surface, 39... Regulating member, 3
9 B...Latching recess, 42...Spring, 43...Setting catch, 44...Adjustment bolt, W...Target Processed material.

Claims (1)

[Scope of utility model registration request] A guide rod, which is slidably inserted into the base, has first rods at both ends that hold the workpiece therebetween. A second vice is provided, and a feeding device is provided between the first vice and the base to adjust the movement of the base along the width direction of the workpiece,
Furthermore, a cutting device having a chain blade for cutting the workpiece is attached to the main body, which is movable up and down with respect to a column erected on the base, and is swingable along the longitudinal direction of the workpiece. The chain chisel machine is provided with a means for holding the cutting device at a predetermined oscillation angle between the main body and the cutting device, wherein: 1. Moreover, one end of the guide rod is fitted into the first vise so as to be movable in the axial direction, and a clamp lever is provided at one end of the guide rod to move the second vise together with the guide rod in the direction of clamping the workpiece. is pivotally mounted to be tiltable, and this clamp lever is biased in the unclamping direction by a spring and is connected to the first vise by a retaining pin and an engagement hole, and further, the engagement hole holds the clamp lever. A sliding surface that moves the second clamp together with the guide rod to the clamping position of the workpiece when tilted in the clamping direction; −
and a locking surface for holding the second vise in a clamping position.